CN116731592A - Phenolic epoxy paint for welded pipeline and preparation method thereof - Google Patents

Phenolic epoxy paint for welded pipeline and preparation method thereof Download PDF

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Publication number
CN116731592A
CN116731592A CN202310733704.9A CN202310733704A CN116731592A CN 116731592 A CN116731592 A CN 116731592A CN 202310733704 A CN202310733704 A CN 202310733704A CN 116731592 A CN116731592 A CN 116731592A
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China
Prior art keywords
parts
component
coating
epoxy
phenolic
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Pending
Application number
CN202310733704.9A
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Chinese (zh)
Inventor
粟鹰
汤润超
郭发军
粟湘鹏
李赫楠
蒙亚军
王卓鹏
李青静
武壮壮
李梦君
闫晓科
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Jiangsu Yulong Taihu New Material Technology Co ltd
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Jiangsu Yulong Taihu New Material Technology Co ltd
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Application filed by Jiangsu Yulong Taihu New Material Technology Co ltd filed Critical Jiangsu Yulong Taihu New Material Technology Co ltd
Priority to CN202310733704.9A priority Critical patent/CN116731592A/en
Publication of CN116731592A publication Critical patent/CN116731592A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C09D163/04Epoxynovolacs
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18Fireproof paints including high temperature resistant paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/65Additives macromolecular
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045Sulfates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/321Phosphates
    • C08K2003/328Phosphates of heavy metals

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention discloses a phenolic epoxy coating for welded pipelines and a preparation method thereof, wherein the coating consists of a component A and a component B; wherein the component A consists of the following raw materials in parts by mass: 17-32 parts of epoxy resin, 0.7-2.5 parts of F-1 colloidal graphite, 19-26 parts of precipitated barium sulfate, 1-4 parts of zinc phosphate, 0.4-1 part of phthalocyanine blue, 1-3.5 parts of talcum powder, 6-8 parts of titanium dioxide, 1-3 parts of 6650 polyamide, 0.3-0.3 part of defoamer and 0.1-0.3 part of BYKA530 anti-settling agent; wherein the component B comprises the following raw materials, by mass, 90-95 parts of an epoxy curing agent and 5-10 parts of benzyl alcohol. The phenolic epoxy coating can be used as a coating material for the inner joint coating of the circumferential weld of the field pipeline, the thickness of the coating can reach 600-1500 microns once, and the phenolic epoxy coating in the technical scheme can be used as an inner coating of oil and gas transmission, sea water desalination steel pipes, containers and storage tanks. The chemical resistance is excellent, the chemical soaking of high-temperature acid crude oil can be resisted, and the working temperature is as follows: maximum, 120 ℃ per 302 ℃ under dry conditions, 95 ℃ per 250 ℃ under wet conditions.

Description

Phenolic epoxy paint for welded pipeline and preparation method thereof
Technical Field
The invention relates to the technical field of phenolic epoxy paint, in particular to a phenolic epoxy paint for welding pipelines and a preparation method thereof.
Background
Pipes refer to devices for transporting gas, liquid or fluid with solid particles coupled by pipes, pipe couplings, valves, etc. In general, after the fluid is pressurized by a blower, a compressor, a pump, a boiler, etc., the fluid flows from a high pressure place to a low pressure place of a pipeline, and the fluid can be conveyed by the pressure or gravity of the fluid. The piping is used in a wide variety of applications, mainly in water supply, water drainage, heat supply, gas supply, long distance transportation of petroleum and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices.
The normal circulation of fluid is ensured by the connection of the pipelines in a welding mode, but the rigidity of the welding part of the pipeline is higher, and compared with the positions of other pipelines, the comprehensive performance is poorer, so in the prior art, coating materials are used as protective layers at the joint of the pipeline girth weld, the connection stability between the pipelines is ensured, and the high temperature resistance of the conventional common coating is poorer, and the premature failure of the coating is possibly caused; while some high-temperature resistant coatings can resist high temperature due to thinner construction coating, the anti-corrosion effect is not ideal, and corrosion can occur in short-term use. Therefore, the inventor designs a phenolic epoxy coating for welding pipelines and a preparation method thereof, and solves the technical problems.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the phenolic epoxy paint for welding the pipeline and the preparation method thereof, and achieves the effect of effectively protecting the welded pipeline.
(II) technical scheme
The invention provides a phenolic epoxy coating for welded pipelines and a preparation method thereof, wherein the coating consists of a component A and a component B;
wherein the component A consists of the following raw materials in parts by mass: 17-32 parts of epoxy resin, 0.7-2.5 parts of F-1 colloidal graphite, 19-26 parts of precipitated barium sulfate, 1-4 parts of zinc phosphate, 0.4-1 part of phthalocyanine blue, 1-3.5 parts of talcum powder, 6-8 parts of titanium dioxide, 1-3 parts of 6650 polyamide, 0.3-0.3 part of defoamer and 0.1-0.3 part of BYKA530 anti-settling agent;
wherein the component B comprises the following raw materials, by mass, 90-95 parts of an epoxy curing agent and 5-10 parts of benzyl alcohol.
Preferably, the weight ratio of the component A to the component B of the phenolic epoxy coating is 100:20-30.
Preferably, the epoxy resin comprises 828 epoxy resin and 861340 nitrile rubber modified epoxy resin, wherein 828 epoxy resin accounts for 18-25 parts, and 861340 nitrile rubber modified epoxy resin accounts for 2-7 parts.
Preferably, the defoamer is one or more of TEGOAirex900 defoamer and BYK307 defoamer.
Preferably, the epoxy hardener is one or more of 2003 epoxy hardener and 5772 epoxy hardener.
The invention also provides a phenolic epoxy paint for welding the pipeline and a preparation method of the phenolic epoxy paint, comprising the following steps:
s1, weighing according to a proportion to prepare a component A, sequentially placing epoxy resin, F-1 colloidal graphite, precipitated barium sulfate, zinc phosphate, phthalocyanine blue, talcum powder, titanium dioxide, 6650 polyamide, a defoaming agent and a BYKA530 anti-settling agent into a vacuum stirring reaction kettle, uniformly stirring ingredients in a vacuum environment, and standing for 60min after the stirring time is 20-40min to obtain the component A.
S2, weighing according to a proportion to prepare a component B, placing an epoxy curing agent and benzyl alcohol into a reaction kettle, uniformly stirring for 40-60min, and standing for 60min to obtain the component B.
S3, the weight ratio of the component A to the component B is 100: and (3) proportioning 20-30 to obtain the phenolic epoxy paint.
(III) beneficial effects
The invention provides a phenolic epoxy paint for welded pipelines and a preparation method thereof, and the phenolic epoxy paint has the following beneficial effects:
the phenolic epoxy coating for welded pipelines and the preparation method thereof can be used as a coating material for the internal joint coating of the circumferential weld of the on-site pipeline, the thickness of the coating can reach 600-1500 microns once, the spraying thickness of the coating can be effectively increased, and the phenolic epoxy coating in the technical scheme can be used as an internal coating of oil and gas transmission, sea water desalination steel pipes, containers and storage tanks. The chemical resistance is excellent, the chemical soaking of high-temperature acid crude oil can be resisted, and the working temperature is as follows: maximum, 120 ℃ per 302 ℃ under dry conditions, 95 ℃ per 250 ℃ under wet conditions.
Detailed Description
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme, a phenolic epoxy coating for welding pipelines and a preparation method thereof, wherein the coating consists of a component A and a component B;
wherein the component A consists of the following raw materials in parts by mass: 17-32 parts of epoxy resin, 0.7-2.5 parts of F-1 colloidal graphite, 19-26 parts of precipitated barium sulfate, 1-4 parts of zinc phosphate, 0.4-1 part of phthalocyanine blue, 1-3.5 parts of talcum powder, 6-8 parts of titanium dioxide, 1-3 parts of 6650 polyamide, 0.3-0.3 part of defoamer, 0.1-0.3 part of BYKA530 anti-settling agent, wherein the epoxy resin comprises 828 epoxy resin and 861340 nitrile rubber modified epoxy resin, the 828 epoxy resin accounts for 18-25 parts, the 861340 nitrile rubber modified epoxy resin accounts for 2-7 parts, and the defoamer adopts one or more of TEGOAirex900 defoamer and BYK307 defoamer.
The component B comprises the following raw materials, by mass, 90-95 parts of an epoxy curing agent and 5-10 parts of benzyl alcohol, wherein the epoxy curing agent adopts one or more of 2003 epoxy curing agent and 5772 epoxy curing agent.
The weight ratio of the component A to the component B of the phenolic epoxy coating is 100:20-30.
Example 1:
the invention also provides a phenolic epoxy paint for welding the pipeline and a preparation method of the phenolic epoxy paint, comprising the following steps:
s1, weighing 26.48 parts of 828 epoxy resin, 5.93 parts of 861340 nitrile rubber modified epoxy resin, 1.52 parts of F-1 colloidal graphite, 27.59 parts of precipitated barium sulfate, 2.76 parts of zinc phosphate, 0.69 part of phthalocyanine blue, 2.76 parts of talcum powder, 7.45 parts of titanium white, 6650 polyamide, 2.21 parts of EGOAirex900 defoamer, 0.28 part of BYK307 defoamer and 0.28 part of BYKA530 anti-settling agent according to a proportion, and placing the materials into a vacuum stirring reaction kettle, uniformly stirring the materials in a vacuum environment, wherein the stirring time range is 20-40min, and standing for 60min to obtain the A component.
S2, weighing according to a proportion to prepare a component B, and placing 46.7 parts of 2003 epoxy curing agent, 46.7 parts of 5772 epoxy curing agent and 6.6 parts of benzyl alcohol into a reaction kettle to uniformly stir for 40-60min, and standing for 60min to obtain the component B.
S3, the weight ratio of the component A to the component B is 100: and (3) proportioning 20-30 to obtain the phenolic epoxy paint.
In summary, the phenolic epoxy coating for welded pipelines can be used as a coating material for the inner joint coating of the circumferential weld of the field pipeline, the thickness of the coating can reach 600-1500 microns once, and the phenolic epoxy coating in the technical scheme can be used as an inner coating of oil and gas transmission, sea water desalination steel pipes, containers and storage tanks. The chemical resistance is excellent, the chemical soaking of high-temperature acid crude oil can be resisted, and the working temperature is as follows: maximum, 120 ℃ per 302 ℃ under dry conditions, 95 ℃ per 250 ℃ under wet conditions.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A phenolic epoxy paint for welding pipelines and a preparation method thereof are characterized in that: the coating consists of a component A and a component B;
wherein the component A consists of the following raw materials in parts by mass: 17-32 parts of epoxy resin, 0.7-2.5 parts of F-1 colloidal graphite, 19-26 parts of precipitated barium sulfate, 1-4 parts of zinc phosphate, 0.4-1 part of phthalocyanine blue, 1-3.5 parts of talcum powder, 6-8 parts of titanium dioxide, 1-3 parts of 6650 polyamide, 0.3-0.3 part of defoamer and 0.1-0.3 part of BYK A530 anti-settling agent;
wherein the component B comprises the following raw materials, by mass, 90-95 parts of an epoxy curing agent and 5-10 parts of benzyl alcohol.
2. The phenolic epoxy coating for welded pipes of claim 1, wherein the weight ratio of the phenolic epoxy coating a component to the B component ranges from 100:20-30.
3. A phenolic epoxy coating for welded pipes according to claim 1 wherein the epoxy resin comprises 828 epoxy resin and 861340 nitrile rubber modified epoxy resin, wherein 828 epoxy resin comprises 18-25 parts and 861340 nitrile rubber modified epoxy resin comprises 2-7 parts.
4. A phenolic epoxy coating for welded pipes as claimed in claim 1 wherein: the defoamer adopts one or more of TEGO Airex900 defoamer and BYK307 defoamer.
5. A phenolic epoxy coating for welded pipes as claimed in claim 1 wherein: the epoxy curing agent adopts one or more of 2003 epoxy curing agent and 5772 epoxy curing agent.
6. The phenolic epoxy paint for welded pipes and the preparation method thereof according to claim 1, wherein the preparation method comprises the following steps:
s1, weighing according to a proportion to prepare a component A, sequentially placing epoxy resin, F-1 colloidal graphite, precipitated barium sulfate, zinc phosphate, phthalocyanine blue, talcum powder, titanium dioxide, 6650 polyamide, defoamer and BYK A530 anti-settling agent into a vacuum stirring reaction kettle, uniformly stirring ingredients in a vacuum environment, and standing for 60min after the stirring time is 20-40min to obtain the component A.
S2, weighing according to a proportion to prepare a component B, placing an epoxy curing agent and benzyl alcohol into a reaction kettle, uniformly stirring for 40-60min, and standing for 60min to obtain the component B.
S3, the weight ratio of the component A to the component B is 100: and (3) proportioning 20-30 to obtain the phenolic epoxy paint.
CN202310733704.9A 2023-06-20 2023-06-20 Phenolic epoxy paint for welded pipeline and preparation method thereof Pending CN116731592A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103666201A (en) * 2013-12-13 2014-03-26 天津科瑞达涂料化工有限公司 Long-acting acid-base resistant solvent-free anticorrosive paint as well as preparation method and application thereof
CN104087119A (en) * 2014-07-14 2014-10-08 沈阳金飞马制漆有限公司 Anticorrosive paint for inner wall of water supply cast iron pipe
CN108264824A (en) * 2018-02-12 2018-07-10 石家庄市油漆厂 Buried steel pipe outer wall airless spraying solventless epoxy coating and preparation method thereof
CN109423168A (en) * 2017-07-12 2019-03-05 北京碧海舟腐蚀防护工业股份有限公司 Heat resistant phenolic epoxy coating, preparation method and application
CN111205746A (en) * 2020-01-21 2020-05-29 西北永新涂料有限公司 Solvent-free oil pipeline anticorrosion and drag reduction special coating and preparation method thereof
CN113980557A (en) * 2021-11-02 2022-01-28 烟台金桥优尼科新材料科技有限公司 Solvent-free novolac epoxy heat-insulating anticorrosive paint and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103666201A (en) * 2013-12-13 2014-03-26 天津科瑞达涂料化工有限公司 Long-acting acid-base resistant solvent-free anticorrosive paint as well as preparation method and application thereof
CN104087119A (en) * 2014-07-14 2014-10-08 沈阳金飞马制漆有限公司 Anticorrosive paint for inner wall of water supply cast iron pipe
CN109423168A (en) * 2017-07-12 2019-03-05 北京碧海舟腐蚀防护工业股份有限公司 Heat resistant phenolic epoxy coating, preparation method and application
CN108264824A (en) * 2018-02-12 2018-07-10 石家庄市油漆厂 Buried steel pipe outer wall airless spraying solventless epoxy coating and preparation method thereof
CN111205746A (en) * 2020-01-21 2020-05-29 西北永新涂料有限公司 Solvent-free oil pipeline anticorrosion and drag reduction special coating and preparation method thereof
CN113980557A (en) * 2021-11-02 2022-01-28 烟台金桥优尼科新材料科技有限公司 Solvent-free novolac epoxy heat-insulating anticorrosive paint and preparation method thereof

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